如何裁剪 PDF 页面

谁能帮助我，如何像 Acrobat Professional 那样剪切 PDF 页面？

This snippet http://osdir.com/ml/windows.dotnet.itextsharp.general/2008-09/msg00080.html可能会帮助你：

public static void CropDocument(string file, string oldchar, string repChar)
{
    int pageNumber = 1;
    PdfReader reader = new PdfReader(file);
    iTextSharp.text.Rectangle size = new iTextSharp.text.Rectangle(
    Globals.fX,
    Globals.fY,
    Globals.fWidth,
    Globals.fHeight);
    Document document = new Document(size);
    PdfWriter writer = PdfWriter.GetInstance(document,
    new FileStream(file.Replace(oldchar, repChar),
    FileMode.Create, FileAccess.Write));
    document.Open();
    PdfContentByte cb = writer.DirectContent;
    document.NewPage();
    PdfImportedPage page = writer.GetImportedPage(reader,
    pageNumber);
    cb.AddTemplate(page, 0, 0);
    document.Close();
}